How can I delete a particular row from the table in a SQLquery

问题

How can I delete a particular row from the table in a SQLquery. I used primary key and Foreign key in this table. I am using Oracle 11G.

回答1:

its very simple, may be you need some reference: http://psoug.org/reference/delete.html

DELETE FROM table_name WHERE columnname= 'value';

回答2:

you asking to delete column Right? update employee set city_name = '' where empid = '12'

Try this... This will make the column to NULL

回答3:

Consider this example

You are having a table named cars columns are car_id, car_model, car_colour

car_id           car_model         car_colour
 234              hyundai           red
 345              Nano              white
 565              Maruthi           black
 888              BMW               brown
 895              Audi              Blue
 234              hyundai           red_blue
 345              Nano              white_yellow
 565              Maruthi           black_shade
 888              BMW               brown_king
 895              Audi              Blue_red

now here you want to delete the brown_king colour row, then you want to type the below query

delete from table_name where column_name = 'condition'

delete from cars where car_colour ='brown_king'

This will delete that particular row in this table.

来源：https://stackoverflow.com/questions/17082580/how-can-i-delete-a-particular-row-from-the-table-in-a-sqlquery